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nuclear physics

(Encyclopedia)nuclear physics, study of the components, structure, and behavior of the nucleus of the atom. It is especially concerned with the nature of matter and with nuclear energy. ...

nucleus, in physics

(Encyclopedia)nucleus, in physics, the extremely dense central core of an atom. Following the discovery of radioactivity by A. H. Becquerel in 1896, Ernest Rutherford identified two types of radiation given off b...

fission

(Encyclopedia)fission, in physics: see nuclear energy and nucleus; see also atomic bomb. ...

barn

(Encyclopedia)barn, abbr. b, in physics, unit of nuclear cross section, i.e., the effective target presented by a nucleus for collisions leading to nuclear reactions; it is equal to 10−24 square centimeters. The ...

Politzer, Hugh David

(Encyclopedia)Politzer, Hugh David, 1949–, American physicist, b. Mineola, N.Y., Ph.D. Harvard, 1974. Politzer has been a professor at the California Institute of Technology since 1977. He was a co-recipient, wit...

Nodier, Charles

(Encyclopedia)Nodier, Charles shärl nôdyāˈ [key], 1780–1844, French novelist and poet. From 1824 he was librarian of the Bibliothèque de l'Arsenal in Paris. His salon was the nucleus of the beginning romanti...

bibliography

(Encyclopedia)bibliography. The listing of books is of ancient origin. Lists of clay tablets have been found at Nineveh and elsewhere; the library at Alexandria had subject lists of its books. Modern bibliography b...

atomic mass unit

(Encyclopedia)atomic mass unit or amu, in chemistry and physics, unit defined as exactly 1⁄12 the mass of an atom of carbon-12, the isotope of carbon with six protons and six neutrons in its nucleus. One amu is e...

Gross, David Jonathan

(Encyclopedia)Gross, David Jonathan, 1941–, American particle physicist, b. Washington, D.C., Ph.D. Univ. of California, Berkeley, 1966. Gross was a professor at Princeton from 1969 to 1997, when he joined the fa...

Wilczek, Frank Anthony

(Encyclopedia)Wilczek, Frank Anthony, 1951–, American physicist, b. New York City, Ph.D. Princeton, 1974. Wilczek was a professor at Princeton (1974–80, 1989–2000) and at the Univ. of California, Santa Barbar...
 

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